Benches

I really think you would find that the port would react the same on either bench. One testing at 10 inches and the other at 28 inches. Both of those depressions are great enough to avoid slow laminar flow yet neither one is high enough to cause significant changes in the flow patterns which just don't change much until at or near super sonic velocities (same as with areodynamics).

Again, I believe that a larger flow bench certainly has advantages over a smaller bench because it's resolution is higher, MUCH higher on a large cylinder head. I believe that a Superflow 110 is at or somewhat above it's limits with an A-460 or similar head just as is stated in it's literature, good for engines making about 100 horsepower per cylinder or less. This does not mean that it can't produce accurate numbers it's just that the resolution is no longer high enough to show small changes and do serious port development work. For someone like me it's probably ok because I'm still looking for those 3%-5% changes.

Good stuff for discussion...